fixing

app.py

@@ -19,8 +19,8 @@ def my_custom_tool(arg1:str, arg2:int)-> str: #it's import to specify the return
     return "What magic will you build ?"
 
 @tool
-def get_a_joke() -> str:
-    """A tool to return a joke.
+def telling_a_joke() -> str:
+    """A tool to tell a joke.
     """
     return "Why did the DevOps engineer break up with the cloud?,Because it kept throwing unexpected bills!😆"